{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304921883",
    "entityType": "User",
    "nonce": "0x020cd97352dc690ff248ec26aa2f775e1c8462af494720d45d94e6ba866cd18b",
    "signature": "0x4a63730c730582410548d0016e338a4b8e21f9bd9c98fe79f1e67f6da88209fc5f0870cedb9cda7eb7843a2f357e568a94db64fd93e48df53285aaf02f38f8fa1c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}