{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142343",
    "entityType": "User",
    "nonce": "0x7094cb272d99fa546ab46a494295513807da16550405824ebb1d6431fbf2541b",
    "signature": "0x014e19ef5138c289f284637d33be42317df3afb3ebaa75f0dfd05bba8caad7af3f1ca96c2a83a16d100408b7ae526b412b160ca40c3529f8a213cb4c7a58a0691c",
    "signer": "0x2Df83D15c880275a0138820cE2009Fc85eF32C65",
    "userId": "107618708"
  }
}