{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420265",
    "entityType": "User",
    "nonce": "0x258a15bcc9cdd460ff73f1315e03053a405405edf643ee76185c8a2ac7889d50",
    "signature": "0x24a3f96209290af377949597d055ccdc92a58b6588e069bb0d9338effb76fe703c0e5747ca2d3839abbd54609a5934ddcc14359919c0e012aa0d4fedeb17f7c91b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}