{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54711",
    "entityType": "User",
    "nonce": "0xb944218424feb51858d70ee4217ff27058958a86ccba89f8b0f65d992c8f0a3d",
    "signature": "0xf22741161520d93ce4dd49e6ba7e57b7003dd415dd0afdabe0fd6ebadf69b1896360ad7ee0a3367a8973fba023c79317bab43520f77672ba46119115679d9d061b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}