{
  "manageEntity": {
    "action": "Save",
    "entityId": "436799623",
    "entityType": "Track",
    "nonce": "0xb05f332df2858e0bb1490ffe66bbbbcb3cd6799014cad656608f3fb19f0cf6e0",
    "signature": "0x99293ab79b81def7f5fe2abc79e4943276f6c358df6f2ae7847e75903cc4b1c52dcd693aa8952db5e19a2895cc1acb1200aca6f7b32ee1bfd0fc8efdd69ed6101c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}