{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428661039",
    "entityType": "User",
    "nonce": "0xe5c4386c1491fec68e1ee93cc8def07050ef5909948f040f3f6da9f3ed3cec20",
    "signature": "0xf4c15b2e519b81593194fcdd138e66d60eddf1588dc95b16fb22901cff772f9a711c87b75f4d9c9ff8220714e0fa1a80c3ee0d65290484e2d9802c0aaa9f360b1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}