{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8b43ba41e4dfcd16df207c312f15f87bb2bf30cb3375bbf6c5db47190c915753",
    "signature": "0x68fa0ba87ade20c11a1019e9d90e15b5bc9b2340e8e1f4c4f77e85432aa3330d397b43d00d8f00617ee9c04c36454a7be1c7273545d5f79afe7d24c80f817e721b",
    "signer": "0xa1962F596d0c21815F786Be31Cce30330233Cd5a",
    "userId": "653470626"
  }
}