{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320661",
    "entityType": "User",
    "nonce": "0xa5327af32bc1b754f282ba244668b866035494e8f15128e3b24cc12c6f29d976",
    "signature": "0x0af7daf51f8a762ae7a7367494a95d8c5f104578085453758826bc51f013165d27235b09d164febfd4e1c9d323fbdaf8c971d04dbc9edd9bb0d44fad15e483a31b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}