{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234183",
    "entityType": "User",
    "nonce": "0x85ac618f7e23222f30a178cc187f7f36cc64aa2375a964b9e5aa01c6b1bbcac3",
    "signature": "0x00c172c7e0c2164a7771283f10d03b91aa3838851cfefa3d7c86a5c19f96db7e7367edc1b62cf847d458b3f8d5a4289d59d1d2f60746e3eaece62e434edec36d1b",
    "signer": "0x28fC8B4966Ce6368CED67496DaeF648ddE50bC1F",
    "userId": "159809481"
  }
}