{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "331788639",
    "entityType": "User",
    "nonce": "0x83e19f60ffa9c7b79786cec01efe8cbf704250bbfd9ebcf3bf87a97b9e3859f0",
    "signature": "0xc3dfaaa93882d279e00986a1030bfca16d3f6a5e29c486b2f3fbd48eb24593775f21eaff8c8c1996621c98916b4eae2e77dd7d11061bf9c0aef7a1796f7a40cf1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}