{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x4ec7383c6d92cfc289fbba0a3eb465c976dcf2ae5ec1a04177c457870028ca2e",
    "signature": "0x66a9aef895daac9fc0b7d670cff71443a4e5de9ea02256d3f2df91ffcf8343806e1d1a3f02d800db6e799a902c37fed8048fdaa36994d7be1549bb1e84f073191c",
    "signer": "0xb001DCb64Bf57b3EcC76C4Fe5AbfE2a8B084D6ba",
    "userId": "641557420"
  }
}