{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1721",
    "entityType": "User",
    "nonce": "0xfbedf09a3151cde4cc0e7c61718fabd17d60e5aa5a6cdea22286dee560a02053",
    "signature": "0x0ea410f25e2499ed8af09aed3543969d95216bb2226d5bbac0f6f384a9df428c30e24dc66ba18299363b5ef422736860367de6082f3979325e13dd16efbdbce51c",
    "signer": "0x997f52c4af8280b4e3F3F5A559DC3565DC8C8fB5",
    "userId": "337364291"
  }
}