{
  "manageEntity": {
    "action": "Save",
    "entityId": "55092442",
    "entityType": "Track",
    "nonce": "0xe09fdc408bed738f80b01039196d135939785793173759048e6cebde48e3859b",
    "signature": "0x9ecfdb767962ebf7cf4c1e6c3609406239c304bac6843962f5da79f9ac58d6991305468b6a6e6505fb0021d6d376768bd2916e7c4293ff0582a7a8cd0dc672891c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}