{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "391391717",
    "entityType": "User",
    "nonce": "0x916454e4078282592293268428532e973f0e9aafc327af6089d0932a583009e7",
    "signature": "0x36b74eeb5aa0ab9083130aa3b5a8dc9589e8b116063b5b0c53155ed8c4c2d4fa5b09dbdc3dd75c40c325865e60ea7e10561e7a34560dab2d90bdc83acb29b95d1c",
    "signer": "0xf6Abd43B523F42e63f843eC5DeE1231074E83d60",
    "userId": "901763795"
  }
}