{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "135478755",
    "entityType": "User",
    "nonce": "0x6a3581b80464d24b78d93a7e3048d2a64de1e7b9b5e85bed56ca839ad0bb12d5",
    "signature": "0x22e29635fbade80a3261baa83962afdc64d6dc7e3ab5526c17213b9c70418a5b6e5a7d31454bb633a70ea3b07b409a239af0593ca9e0633def97e6b1830fd22b1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}