{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "251854",
    "entityType": "User",
    "nonce": "0x73a6e60b07590bbc01224d77616650fa72a64e5c6d7fc0440c854d4ff3a2ba09",
    "signature": "0x0af5b76e29d9c8525886c4a31faedb85a18b75ce5b7863aa99943b6ef674e60010f5435c576c9718c856457c842d54ee30d3946121e02d83e6657b1c607ebf4a1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}