{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "688",
    "entityType": "User",
    "nonce": "0x28e222d8a5dde67f8bf760aff13238d862497173da62a750e886797933a64921",
    "signature": "0xc0c1d9cb94d60730f1d1d0a59731e6b84b602ad7728b523d67324361775b4d7319bfa3ce97176ac2a36d4b33b2e4588da00265acfeb8b81a9ae61868c7adeff21c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}