{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xf7e2d0dc10bd657d2df5d0fd20d9540fa4eb3b24028d7d56f5aa01ed2db7427e",
    "signature": "0x43e343935d0a0d9d81de7a59e03e64fad8bc785c6ffc5f9808d108e6e9239a89159aa88aa6352e3dbe28057c8769a7bd262a322aec9c407d2a84cd65c5eb65631c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}