{
  "manageEntity": {
    "action": "Update",
    "entityId": "726370607",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x01b4cd620bb3c2358e527232ef3d8955b4e53a9760494e17db6af5f029647298",
    "signature": "0x667815a069c0717f28bbf3fd8b748c06ec09b93e0a213c65593eb9286c1177104476b4b132bfb84b8fc40777209e6acb4456497b09dd2b812e00cf62785f30641b",
    "signer": "0x914978409E48454c7f910d43851B499F0ef1C4d2",
    "userId": "726370607"
  }
}