{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3397058f1d6b4e09339b627687e9c65249e9d2b66bb126813237ebef357343c7",
    "signature": "0x1d50c4196784809e1f8412cebe3b7c594c6af34b1616a84449d19942daef942d30301fb0e20c99086e235184b7ea51f38d25d55de5c5f095bdd29b46da1355571c",
    "signer": "0xdAAEA36c089a1CFe4f77A3966D544130A02Eee4B",
    "userId": "41419721"
  }
}