{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8151",
    "entityType": "User",
    "nonce": "0x9cb7848f94497988cb407768cb136ef606254736ecb6d9598f846b81a3399e21",
    "signature": "0x8b556914931745c4748162dfb50cb36d174560da0bf209b81b8c511ed2e9b401473031b216844b12b504dd5eca1e9c0e5e34ccddd698e382ffa9f43373fb07d11c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}