{
  "manageEntity": {
    "action": "Save",
    "entityId": "694689053",
    "entityType": "Track",
    "nonce": "0xf881e219995ca12a37c627f5b3316658b8a8b2e6a0630d3fa947fc96dc08f91c",
    "signature": "0x97470f0944c0c4cdd00a1817b06fa826530eba26c7bd96abfa8566746013171241087cc62f9aaf32a8b3f5335b9dcd6c5897ee0c30013aaf49bd02d20e1cd4af1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}