{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64839",
    "entityType": "User",
    "nonce": "0x05bcdb13efd9dfef33bcfccdee6d9f23c8eda484acc01a1affd1dbaca1a0654a",
    "signature": "0xbfc1d85f7461c2eab40c97e343ff55b0f59482237a53b8328b631b77b15f7c0f6dcd91cf05baac8206debe88307c0ed43e5f8da0f35c3c7a5c08fb6bc73414401b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}