{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "370220",
    "entityType": "User",
    "nonce": "0x2369dc082eb1d87cc7e874a668d096cce81bca92b67f414304228e443157deb2",
    "signature": "0x5cfc9a3fb93448528d0ab27b5ffb2b26f6071c5803a8fc1f04828ce38f4b67251ecbecd0e73ad79a7fc6197cdb16bb9703db58e1e3b6ee1bb5bc90a2fa4c93431b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}