{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "78451",
    "entityType": "User",
    "nonce": "0x8bdf5cff30737f7638edc778a698546c30aa93235047cd76d5e6647a1ef71d67",
    "signature": "0x015bfbf0a29447ece8f283aaf497627ef372bd9c926d0cf4855eb0592b5e86677912e297dbb453f58a6353f90334437a3d1b4b94b28021746e6d08756cb0811a1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}