{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1512779",
    "entityType": "User",
    "nonce": "0x6e7324411bd631ecb9b7050993b485918e21399b75bc053f84353d41350722ce",
    "signature": "0x09f41ec1c8b33a664f5ca166698e2b1fd33e03cd86532fbfaf4aaf42534ff227323cf338f9ea61ef69969d1dc3f3ef4599ec417f5571211ad65d8aff2ad165b21c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}