{
  "manageEntity": {
    "action": "Update",
    "entityId": "677998924",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1f9da628d32973e4f98f81b4a9b0e3d124a2b2ff2dde0af9cc7a244463384287",
    "signature": "0x68fb0dd465f85262a6d52cb74530b62a171ce7d45441c51ed67caaa93bec3c027d8c12200f532f1263a4dbd52988782e687b5c3e0aa18b589199669d1b866b411c",
    "signer": "0x019Fc3Af93628FBDf041D601CA0f3B1d108735df",
    "userId": "677998924"
  }
}