{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102143",
    "entityType": "User",
    "nonce": "0x1c3cb0e60882a218d5efc72940932badd199bd5db57b7a6a2a498778fb13108a",
    "signature": "0x87a6af7e90b7201a1f145da6e1707394b6b52928fac9bdbc90d3a56f297e9aba0049d7f5abb8e88028600340fe83706fcfd2fbc441917c137d1b726246e244681b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}