{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "135876",
    "entityType": "User",
    "nonce": "0xbdc449dc4455d131ca5b714229598989f6b5764aa97aec5a9d0621d9b6887521",
    "signature": "0x4781d6c65aaa61f8743f183271f992ea149caf4e4ebcd01d316ed44b7fb6f59f6a1415f2648bc388462af0145bdecb885398ef0003befb8e22cfcea8c8c90de91c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}