{
  "manageEntity": {
    "action": "Save",
    "entityId": "715626625",
    "entityType": "Track",
    "nonce": "0x41abda8a2bfa05143296b9ae99ed5248b93906f2a451899943dba0fc0b837343",
    "signature": "0xf6cff17159375e72460e12c94a612e6af939824156137756b543bee8ee92938847b81c9d5fe5c59bd1c93e5c6fee8a3627c50ecfc616044963519be193d176d31c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}