{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144473",
    "entityType": "User",
    "nonce": "0x319ccad8f981e8bb32947c26743939d8b4a98fb809c3a0cc0b80e659848d62b6",
    "signature": "0xb4b7d7a652cb57287c13e6d942bcf07c8578b468954c2db2608d98f35dc5b74677ca8e3a82f5403d040a876ea1f94b71e7cc936b0598c45673229d8c148e612b1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}