{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0x0329088009b40ee80e2035e80c0e999910f33a83ff0a08c1e41ff3b106c74cfe",
    "signature": "0x8e49b66583185db08182fad68abd8a0c748e332363011a4004c83823216354dc6af07de5c9d8de622e4380703d2d2b64d7256ce8d79de7a3eaa377faf9704fa01b",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}