{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x620465ca66d582a53483cceea4614dff460fb26d2181fe4666f14451bad8f1aa",
    "signature": "0xab222b0879dfc7241ad188f517cd90d3b8b19087126be6bb52afe13739f6fdf6114c0feec4569a3f2e0a061af7b84fcfeaa45035d7c36b5de42a5ffd1e84905a1b",
    "signer": "0x8A7A8486A2ebFD66408518A3dEfF9208e10d437F",
    "userId": "778808623"
  }
}