{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18985",
    "entityType": "User",
    "nonce": "0x7a6df5cb9b0d5f3a029c59628152c490d10c45cfee8109a647befa3a4050d405",
    "signature": "0x3888ce94bbc36ba5f5ab76bbdcc8a37ea6d8104a2969bf1816824d91a2bc6deb447f30188df49e15e75db86067530cc78d5a4ee22155ec1abd59fd9eadd407f21b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}