{
  "manageEntity": {
    "action": "Save",
    "entityId": "55092442",
    "entityType": "Track",
    "nonce": "0xe62041e300e99e1cc4ccc56aadd66e4f2c5ed55ef3107993a41d48fe885a5da3",
    "signature": "0xfb709d79cdccf808502e58bd8720020b70161d58dc5a316280699546e345f443659eae3c9232e44bcd79d097844f12562525d1d4161b4c0d07b95f42b5bafabc1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}