{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30263",
    "entityType": "User",
    "nonce": "0xc1a0521c2b14dd00d797aa2c7a27bbd2a43397457ced91bf89b26adb2ef2d351",
    "signature": "0xf3de6ee93aee9205aef9c3cc77ef1a8b595e4f2deefd42de228272307b4dd0aa12c1028101312ac559f0677a459bd7bdfdd918d3b8934ad1f6d6329b2fb8ac101b",
    "signer": "0x4C66E76dF182632f358E9724C2428c52873236B9",
    "userId": "710666555"
  }
}