{
  "manageEntity": {
    "action": "Save",
    "entityId": "712261",
    "entityType": "Track",
    "nonce": "0xb04195430cb6c26f46f3b21094d22aa477123dfe67f9a4658315be863e628609",
    "signature": "0x96a3f833e14b9ee3a8f02ceee0c6a5cced93bea6c02c536470919e9f914a3a0901afe95148a5e609bc2c1a9f6b1a5680da7bb12767e383c851deafdd20339ebf1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}