{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "980224167",
    "entityType": "User",
    "nonce": "0x9d96e447d7688ec3ba68b63a550f575ab1152ec8497cab9e6818ecda2819314f",
    "signature": "0x5b27c985bdb89c5338f9efc3cb2ca6a95fb767549632750b17a40838dd89ca2e1b7e67bfc4c9b32d66bb37157db0cd0575cd4a908b2d4769c606bfaf34ea7d1e1b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}