{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1645731",
    "entityType": "User",
    "nonce": "0x066bd44c84d773b8123f7e6ebef380201da924d4ba6443382b2a036100a84c64",
    "signature": "0x51a8e5419049dcd84704ef488dfbd14f980eec9c5c15a69ebd6c20337a0fc85e44537976748983bec32e2a64325e6b4a8cd1104a81e1f5bce2a4b328e1c087901c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}