{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4510",
    "entityType": "User",
    "nonce": "0x246fb4f3ff0f2547331eecec04c942c0362615891d4e6036efe43909c98a4d56",
    "signature": "0xeac23edaa1986d1c6e6bbd24e54854874d11c1a1b6cd67378d63776d042e1eae5cea6c37a4f085fa0c3ba8ec165a2d90eca690461ade1d9bec9651568cb55d471b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}