{
  "manageEntity": {
    "action": "Save",
    "entityId": "246486",
    "entityType": "Track",
    "nonce": "0x62f26f267c0eed66193303cb11225847ec010232366bb256a12e521b136de1fe",
    "signature": "0xb31686cb9a73ab160185efed9b6100ce5510a1a81b2d3086dc3ad029aaba4718510076e1d788b6b2e7aa9def786a8b16369d821e206b8c81234d190e1bf997901c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}