{
  "manageEntity": {
    "action": "Save",
    "entityId": "871430093",
    "entityType": "Track",
    "nonce": "0xba7244ab74025dcfeb918a1fef46ac055f432e65c53091281d614b0023c4895a",
    "signature": "0xbbb7108e847d7c4a791a497318c9695115f82bdb67cb5bf5dd2c8ce0304cb2e965fff25f8d872c8ec029cfed85ba9e4c257cc4485aec3c56ee945b315bfb68631b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}