{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8519",
    "entityType": "User",
    "nonce": "0xf5a16acacd1237aa453a13c3a80b9821d6792153a3784f509ffd4fd3e340391f",
    "signature": "0x6434c09122a69d899f787ee65f036a6b5e20fc8d7ca7fe1dc348c92034d6a27e1152696f5bef656268b957a56aa30c10e736310ea1a87f3d2eb30e7ddcd5062d1c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}