{
  "manageEntity": {
    "action": "Save",
    "entityId": "1156545762",
    "entityType": "Track",
    "nonce": "0xf668dd69596f807d98d3f3a6a8064ccb6cc3d2ee09db9a1dc07f89b5c2090d46",
    "signature": "0x7226a2d77ec0819577e3e2864bcac109bce1959e80b07e43168fc70d8b5726de715bf501894e7c609d27dc1f5d8f853f9055319017cf72ebc39c4393992cd8a11b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}