{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0xd02801de3d487b05e3e1cd54613f5f5fd43a10c30aa506d61054fd16bcc9e44d",
    "signature": "0x340e11c1047acb2ee3303bb148c2ed09c7b91df27c74484d23069f1fc5d41b903315bd06e458b9544b56879cebefb93fe3f25907e48d9782a803820ba537245e1b",
    "signer": "0xe3e4e5551A64fEaDc2a8518b64fE2fF7EB6aB2A6",
    "userId": "502392634"
  }
}