{
  "manageEntity": {
    "action": "Save",
    "entityId": "2023951265",
    "entityType": "Track",
    "nonce": "0x707c83875ba71fdbb42e6e79520885386ee9b2a3c1cd0d00c569bab9bef1e17f",
    "signature": "0x4a470747734ef10f889d5ca4a2512d7539b72cad94ad04899b5eb2ef71fcadf115b9ad6195182046a49cf522dc0b17907409ad097dd1d2acd8fc23701afb6b3e1c",
    "signer": "0xe270C91f9476B885124d6c0208211213dC10036a",
    "userId": "94825285"
  }
}