{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372056",
    "entityType": "User",
    "nonce": "0x294c5eb3fa3ceac3816dcfaa080d8bffd5a69629e6415807432f164e539342c6",
    "signature": "0x2f69eac148f1cc6986864c13bb8ce1f344771f06c01e435d3d0281e57d1b0c30532f483dedca009e8110e2467834f254c83fc0e719c05fd7cd20bf4be33fb2bf1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}