{
  "manageEntity": {
    "action": "Save",
    "entityId": "1726789928",
    "entityType": "Track",
    "nonce": "0xed3d363f5ece8a2752b2b20824c72e53a902a0a0a93d20df746353f582d38fa3",
    "signature": "0x11e7068864b2af11fd3c6e4d5f126534aacd0ba57b05b6d188e5ce0f262773bd2b6124bd9b3f100882e3b583b4a2108dfb84a624fcbf6eb44d392d4dae9fd7d11c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}