{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0x2266f026b093163b2ad649a2406173d4a4263afb6b22edbd60c126ceabc091a7",
    "signature": "0x144205e9205394a17761e9f40c2e81c50643efa69bf68643a283c32492de8f0535eaa1f3986aed9b00cb2ca0e45004fea9d20fad2b511a5ac77c6bde5d2d98ab1b",
    "signer": "0x9b6bD4505e2bCfA88acc8680F463a96DAddf1d0d",
    "userId": "213208842"
  }
}