{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "303691",
    "entityType": "User",
    "nonce": "0x1b2b8b6674edfd38a4cd8d110654d4914584125f25500d2e298a2d957031403a",
    "signature": "0xf63719628d96694f52a51fc41768e8237ebd984fb12c0d9336f404ed1f081ef278214fb21d9600c86cf830ed4afc8ee23ab60ef4b40773b8dd964349e345fe0d1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}