{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x91c18afea8a36d27e5e23612ff3ae0fd18c89ac6cffcebb42bdcdca4fbd9bf9c",
    "signature": "0xcf882ab4f13d82288a012aaa010513cdcb0515e38ae57ba9920c35757bcd432a078138973a888d0478ae803e839662cecf3e22b01ff706e24ff1627b241237791b",
    "signer": "0x3c3cf888a82Cd7dC4d4C2a922a11941DD6650657",
    "userId": "426986612"
  }
}