{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "447798047",
    "entityType": "User",
    "nonce": "0xe48c91a683ee76b01de2e60584a5f07aff5cf44894179a5f2d1fd983eaddd13f",
    "signature": "0x81c29d0390cd955fd897919fac4dd1d94a4437abf175efbbed4cdea3cfe2d0905d150c22e17ddb26b6629421b12ea83dd4df3eff34bb1d97793bd0f4fb21c1dd1c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}