{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103847",
    "entityType": "User",
    "nonce": "0xbb834c7ed31c192848d89a30714f827bd8b750fa36c135a757e2acab2efc7408",
    "signature": "0x65981d9b6816fce825b15b328c3aa1e4f23ea19d14dc498b0802f5dc1a8552ca28fe43f6d1b0a71f1f8e17fb339f781a0cf10b0f411d2fb74e22bbbc834b62781c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}