{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x75e7b3e5a7909ca76e3d69a47738e6184ced3a80951c98ffcc9c31374379b419",
    "signature": "0x0e16a0ab3cba1464aa0c206f856197b2e5c1e6b1852a069cda837a02cd661c7b05f847d356d15a92e8bc9ab510e0a40bffa6709e0fffce8dcb1d1d613e58fbe21c",
    "signer": "0x1b3E9Ea15dF71Ced48bA8E493c9BBBcBFa25823a",
    "userId": "913385866"
  }
}