{
  "manageEntity": {
    "action": "Update",
    "entityId": "340767645",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0d23df09cef4aad931f8faa3c14db745fd5747e3585bc020d179a12c5c71f404",
    "signature": "0xdaf6115e464f90617e21bed4f693d6fa46afb2fe7eafebaf4f50c54651e56c9b1edf157a1fd803685e5e19cb31fed4eb2327fd373b09bf0b7bd592ac3a2f34061c",
    "signer": "0x5A20B981a29D6e5E84F8b81B0c5b32304994e650",
    "userId": "340767645"
  }
}