{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "9507",
    "entityType": "User",
    "nonce": "0xf3933555f6c7ea25a78989e2f9e3479a07a4bf6d671986b226be35b8e32b09f7",
    "signature": "0x533a01fe1b64021ce7bff80d1e2f9db90b3d729f9496409e552522ddd1cf1d177206fcb91cda27320082295f64fa0872fd7fb062190373871bd243abac60e3671c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}