{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7da398433fe149d80c7fd324d8d49a320cee3843c3f86d418a2fadabf1d9a132",
    "signature": "0xffb208fe98cc4b99f0f0421247a060a8607a11e6aa4e16cd0f579311a533b15e642955ac5a6a0da7f41dcc38ff5bef5cfa597af641edccc9fadb725b62b80dd71c",
    "signer": "0x8819eEc1be1c0C89885e717ca3147790f3D23660",
    "userId": "613055703"
  }
}