{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0x511eb1619678f6d47b66233d998b7e3fae935ac0c4b7a736cd4a86e408310a6a",
    "signature": "0xf8f7ec4889bf01cd48da8d183cc1eaa4d9f18c3129eba5a3a770df7e2473760f55b6dd83770bc26b7203b5d874dc8a0d768024d6ea79b27ab3916e4bf803b0ee1c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}