{
  "manageEntity": {
    "action": "Save",
    "entityId": "1835846624",
    "entityType": "Track",
    "nonce": "0xe1454db69be1216ff26ea0e50baf5736073a1b9f20700bb960ea6277f3ba2998",
    "signature": "0x06cdfd794b1af35db7f62af0ab90855b2747a39a58672cf24274ced12e1f329d4bf081e681935c34ae61a354af25dcf515baa8efe92e970865fe28e5e51bf1f21c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}