{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17021",
    "entityType": "User",
    "nonce": "0xdce1b0b148ac38d5717af334bb4c494563d43ceb8ec8f8f53ba32e9080ca7f87",
    "signature": "0x1cbefb8011f2ea397083d14b8aade48300635d8b1743b022fc327322dd07e43d17fe986286ac8d88bac49755f4d1f4d7d57f808640851251de84a62b966441cb1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}