{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212717491",
    "entityType": "User",
    "nonce": "0x5361a5f5c44dc2ead5e0b49bd6dc2ac8c15b21c5c8cf0f453bae61ee13c5429a",
    "signature": "0xb74fb04394436324fb4426c8b43328e098dd782b1ff43f33ae3b7332e0935c771ce7bfe847671db9acda37380ccc00fe5cd8aa1a71ec9febb06214acbe6a3a0c1b",
    "signer": "0x580b8ce3181CecdE24dda8DddDB6a57828990d63",
    "userId": "214104220"
  }
}