{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x35383d9a812a1af7130187e640485fdb66b072cfbeffa593b87c81030e7b1907",
    "signature": "0xe37fb97ee4436fb1f111e078504dd40f84f51c72dbe6983f0c4b757c60fdcf81386da25ab8059dd5de19465de382d973fc54c54b75415766a790bca6738f458f1c",
    "signer": "0xADAA76f366782441266581F6B016A9e2b8E11C11",
    "userId": "106240627"
  }
}