{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "889569599",
    "entityType": "User",
    "nonce": "0xa5ac8039f2107d33c9f2caec4e168c6bbbf44c482157fb63dd239461ea17f179",
    "signature": "0xd49955331a0b4405069631aa9e4e9f06957b67dd6d121ab17a3a280e987b26ef27acec583bd4e962de0c6525f53461da51895d8dc085055de186ed9f84738b9d1c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}