{
  "manageEntity": {
    "action": "Update",
    "entityId": "370091516",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdc5d545c8ca4deca34d21cac3b3bad2bea87014cc8031533372b0199874ea986",
    "signature": "0x7a769bc9955165879bb19af842ac4477f0c7b1cd2c263e289f4c0290a1124e46115b1ad3cc3c519b8682da4bda278cca78bc09123b7d2c9623fec6b79c30d7a01c",
    "signer": "0x15B9643abE09bd37C52a5BD1dCF938B05b06cBFB",
    "userId": "370091516"
  }
}