{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf3e3fe6e88b7c43ac234f1a3c40ae80a8363adb3133e6b696151d61c2ea9b021",
    "signature": "0x541f88ee905d18e9b253f1cf4d707e2d6d8ca786d8261d384e3cf2b86c3d21fb57e8eb1655577cfe1e15168b053ff419f8694fc74411485bd709b7d888f6cdc31c",
    "signer": "0xaAB075f1D622286f16eAf63179aa4157DafB1cDf",
    "userId": "850627398"
  }
}