{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "820410392",
    "entityType": "User",
    "nonce": "0xea98640c390bd6d6b8d0bc7bca3f730909baa37b85d87acd973d05760de4acb8",
    "signature": "0xfa6cae850684f97c8641e95af41488b58a851e1834cdad6ffc1fe66ad3edab35557cfdb89f175a777c057067e81edfb81289d832c97bf8f64d461c0c548b018d1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}