{
  "manageEntity": {
    "action": "Update",
    "entityId": "541472989",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa58dd5cd5ad5772357efb583d41e8dc7be9de9f1fb018687a35e13b7a3b6aff6",
    "signature": "0x0da6d8897c42f07f5fc9d3f4e8748ef9f57789d438fcfcd1ceeb474c852883f21c664e2d6762560afbd453c42830bc7b21eff7e337bc05ed71e905f596b67dc31c",
    "signer": "0x6B581355f374E972636E57ff9c8C7c9512FAA895",
    "userId": "541472989"
  }
}