{
  "manageEntity": {
    "action": "Save",
    "entityId": "1278020165",
    "entityType": "Track",
    "nonce": "0xb13dc2294fc42574912e82c4127f9b89802a9e23aeb826a38fa8d77ef8027fbf",
    "signature": "0xe716ff5330f9be8702ea5375973453e0eb402f973cc6e0654cacd60de4e1e596454564ad82d98807ef838e99e3765839001905b02a35d04f3e3155947c172f1a1b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}