{
  "manageEntity": {
    "action": "Save",
    "entityId": "227862",
    "entityType": "Track",
    "nonce": "0x1de3e8242bc06e02e392ee84041b6b25f086c29d5a313442d7ccc8d1de9d1824",
    "signature": "0xeba0b83002a3f466931568679f45a6bcd61cf68d442c4f6576e1e0e5ea64aec65bbe614a9964130029c07a6213bccef0cce49a25d13d85ab766f1db59544cb7e1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}