{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "847467862",
    "entityType": "User",
    "nonce": "0xd922d7b0ea57cf299cfdfdec9223b1b499d854554f4bac5b475eb8daf5a95438",
    "signature": "0xc24f47f787ea4e0142d5c3190ca759ebd3c9dcea733bd944fb76d79ec780a81004e2b34007e9d426790bdd8b27d66e05718d7b9c4523eabd1e2fc9b09b9618e21b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}