{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1572212",
    "entityType": "User",
    "nonce": "0x622799631a4864c6427404be86983f154be5b49dad66cd9a7e58391826268e30",
    "signature": "0xc3b658e2d873720a1dff38dde3d40badf55b1f9fd0a198f9b263b29886238eb05e0fa9bf79c331674c83c813587d4d2a4691f646b5e4afdf209463015c2fd7cb1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}