{
  "manageEntity": {
    "action": "Save",
    "entityId": "1928162383",
    "entityType": "Track",
    "nonce": "0x8d74e33e91e7c629f83e69b8ad2b36ed6e6e2d489f98dcc6bdf11075a7ca5964",
    "signature": "0xd7e4b39fa5a89e3c2955a31db02e24a24419b823199f6cf82e7035b5ec1c01da76a3109ad25300d0ecce3978e0fa843ac32621f15222dffb67d6f54aeac126491b",
    "signer": "0x767f09338Ac6CE8645c0a76a17a560429b582132",
    "userId": "520958130"
  }
}