{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "250734",
    "entityType": "User",
    "nonce": "0x6bc340f9a5ef5d3eea0653687576aa288cb859271a8ad64121110600449d69fb",
    "signature": "0xeafc81c5ad05e22f9b238eb2ca2760001c21c5fb03288c37262a7c1b368ae57225e501af8e7f9764d9dbaa4e80ac805f0ba62b1bdf1024046c05cd8254dae5611b",
    "signer": "0xE726D55D6940a70995Ce9D8aa1aCE76FC6f4f544",
    "userId": "285113781"
  }
}