{
  "manageEntity": {
    "action": "Update",
    "entityId": "546870825",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x947b8f55bad480ee2c0cd4b09b410621d34587d5d987c9bb25a2f38657a4a5df",
    "signature": "0xbe04668871d9cdb0dab02b8b3ab83a17dd3a9d155aabdb565b10774252e760e1073766e90d0135a302d25539c9c9f021c4ba60cc7206f167c953aa684ac6919d1c",
    "signer": "0x513Da7C15E382bBF2D0ae0369EE42D08FED44520",
    "userId": "546870825"
  }
}