{
  "manageEntity": {
    "action": "Save",
    "entityId": "711198795",
    "entityType": "Track",
    "nonce": "0x7267a77662b744a59ef6226b59c1c871b4d903e838eeb41d2e2047e49563ff1c",
    "signature": "0xc0df08700dd1612f8305009aa6a0beb96cb0e1e885d6ce2e645422db9782b8076864a7a443a22c65183372d7ecd7f3a3829c7abbd043c8a9621ac4123c2e34601b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}