{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1511708",
    "entityType": "User",
    "nonce": "0x1995d3530ead87eede860fe39d59a3f6ccf206255a0771b505f9f3691d20093f",
    "signature": "0xa78c3c92e1ead473c853bf1bcb9ffff6ad3b0b0ce766502c90678c50c511727d65f2613c48f4d4e13d1b620e1e03d0fa641f54da06e16e8508170ba0e571e87d1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}