{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137400",
    "entityType": "User",
    "nonce": "0x4eef81802c544972c762e03e0cb70fdebd83d0d05b9800fc5985e298e70a5851",
    "signature": "0x5f59426e4352030c72324b4d90122257096c6c11a32974bd4eb95c626403b04971bb337acbafdbbf490053dec93c5121eed0fee2b8cafcff479fa3d976a30b671c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}