{
  "manageEntity": {
    "action": "Save",
    "entityId": "171060",
    "entityType": "Track",
    "nonce": "0xf2acdf232baa372ece3d3f57b125b7e8ccb577f60f2f78f4e47b999a792d9791",
    "signature": "0xa7772581e2d8b2455a5e7d9a375d27aab9b27e99b3b2bbaacb71589d53695b5e4b800215e5161a8a1c593e0181c878db9b73cd4e4f53195f93157a7e5eae8c921b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}