{
  "manageEntity": {
    "action": "Save",
    "entityId": "2096564038",
    "entityType": "Track",
    "nonce": "0xbcc3d97a250dc1f0a9d4fcf0ea120d8eb09e9a8040c6c9051143bd073cbca604",
    "signature": "0xc348d828c88cca69f041582a9f7c220c5ab8a2afa52c6849667166040c7d4d776f6ab8595a64d9135c6479aa0594cb9ba912bbd9d16b781219e8ac3715afecf81c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}