{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x9028a7e40041bca2aa9888486f6d47252f07125a5eac3803485ebbe1b6d4b68a",
    "signature": "0xfb061d39d6b4c9f3c92d599c36467f6cf95d54fa574397168ae4bd6b00f31b36356dcad1f559cedeb9c537639fa00ad376e04cab81418421f4f3fcd156df5fc21c",
    "signer": "0x7a78569646ADa00a4d555F20fA48e9cDb9ef14F5",
    "userId": "333304008"
  }
}