{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x3cddc3644f2dc5769722a021d54093a5f662d80c31b87284cc729974f70f3d00",
    "signature": "0x936a0eb454e495e0c1ae193ae5e0a6920eee4fd491450534fea696540334db0b0fd7b90dfa3df10137e3a8bdb7513f625abd966e621e9b1f21583ab35b2a963e1b",
    "signer": "0x1ef4f2764434B03864665be867ECf5FA5902e3F8",
    "userId": "928487182"
  }
}