{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121162830",
    "entityType": "User",
    "nonce": "0x5784b9570319eba4b6a2b181112a9f2da82e72cc525f12365796f4440255c5f8",
    "signature": "0x80023e010d46e5e29f1d7bc2c8c48f18cca75c951a6a1cf3ebe309bc3a2e32d33bc423cb2340e2b4beb4586fa3e9f6bba7a2e3477150b9ead231cf51214e175c1c",
    "signer": "0xad1E2A70fa1227797344FD6df31327a26552461a",
    "userId": "153162"
  }
}