{
  "manageEntity": {
    "action": "Update",
    "entityId": "609614723",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2ee3f655e04bacfe61a27dfbd6e2a60e389ad6ca7c7e578a078658c3a59dd466",
    "signature": "0x7b96376964d168f16ba651b033c68eca06a304b33d0526b84d70ded4b418d24b056f9ab3ce5c0fa60fd0b89c5d08973483ecc7200e698fd4ff921c5bbdea1ddb1c",
    "signer": "0x4cC9bB9360d4DB6F9B4F2BE398Ee9e982964f2B0",
    "userId": "609614723"
  }
}