{
  "manageEntity": {
    "action": "Update",
    "entityId": "753174050",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x817c12b996ad779e918233b7ca635d63870a986cf136709deadfbdfbe39f0f85",
    "signature": "0x49101bd3a13cc8c765574bedb9f86bed1f26d3eafab0db10ee5935aa644d2d1626bb7fe0eee1c067b96f10fb3eb0b250ff6e14cdede73be0622e78efde8a0a821b",
    "signer": "0xd8B5EB8911b472b5043A36592DDD6A1D78f91785",
    "userId": "753174050"
  }
}