{
  "manageEntity": {
    "action": "Save",
    "entityId": "62979986",
    "entityType": "Track",
    "nonce": "0xea2c34d85407e1980a22ccf58207e80c170b30c3b7fdb079e2d8e567f73c518c",
    "signature": "0x49494ae044aee92b9c6745b03e146a6f60cb90084f3ffa1b56181ee4073758cf0e255be4c8ad832c69174ce0a41da616e131d99f0da4221ccdc187b0f7c76ff11b",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}