{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "649308118",
    "entityType": "User",
    "nonce": "0x53876d7bf4b955a7c6c9a3be99fb7922f12a4a29f92acc4d747803374ddd18b7",
    "signature": "0x07a8e7e505afd1c7bed17c6c9dc763ce3824120f87f36f27b4463157c2f903eb5a2ff20d0c4712cfff9c19f5aeddc8a0b2e27fcd0adac7c5ad4fe8e9ea384e901b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}