{
  "manageEntity": {
    "action": "Save",
    "entityId": "214117229",
    "entityType": "Track",
    "nonce": "0xf46185885b1281f8935cc8963244d7916756f0140ede264a7dcbd102a8282c34",
    "signature": "0x2bfea50f72441fa62216d77e5219f435ac0caa44c9563568b0f8649a9a2d236503679acc007c96701a411205385a573c2ce7db531261cac3137217ebed4472601b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}