{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "860875289",
    "entityType": "User",
    "nonce": "0xce6d412aa556af98efba9b3464780f944144ea35e61777a95959b8fdca7bda4b",
    "signature": "0x0f6c0dcf067140140aabaa2396e383565a81600dda4beda83d40e12d4faf7b412a0b2c6e2cf9433374a5bc2998eab4c2e101d5e22cac1434cf4e82986f4b6bc31b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}