{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54988",
    "entityType": "User",
    "nonce": "0x300e6225594a23fc8e0b75ec5dd816b7c9b82a9421edff468c297be8c3f8b1d5",
    "signature": "0xe5fced222d553c82d677d693def6a063eca6d4d19fc4408e6bc9842557faed09481fa03888b532e0c8281fbef661d45ae8b18f257602aab232320f03978f02591c",
    "signer": "0x7094144C776594790B5E922D084562dB60549BD8",
    "userId": "602217700"
  }
}