{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "480974",
    "entityType": "User",
    "nonce": "0x94c2cc5122e2a22bf1a2e1578ceaf5d688333f986d7fd0bb95ccad302d39c8f4",
    "signature": "0x2b3a7b62b3b01d5994f71d00b694e61e7f52748911d1d6572d6c50daa9449c4d445c579537148209539ed3dc1f42b8a88a85275ef041190eb881fd270e15e41a1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}