{
  "manageEntity": {
    "action": "Save",
    "entityId": "32680175",
    "entityType": "Track",
    "nonce": "0x8bc972153c48019d4cb79d254c13da037ed59613a8966d3e254a8cdcb9469d55",
    "signature": "0x6f48707cb8e15d731b0109b6ab2d9f4c5cfb3a2cb72b64be8ca0db1c0ad05b4915984ceab01622bc95f802ebe411a45a62aeed2d3e14b90d4f623a39bd4d9d431b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}