{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x0ca4f38f217274dd55a5f9c2a21735f236b2e1afb97054ddc689922161653ad9",
    "signature": "0x84665b15588dd9b0be6ddd7b4865aaecbca02ae1a377034d3f619658877f902159b4e51d5b0d47f90740f67f12ca546cbbea8619bf4fcca32fe940a1b97ee71d1c",
    "signer": "0x4C0e8973cC8C5BB66d6627C8D489e336f0825A94",
    "userId": "939865626"
  }
}