{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "151038",
    "entityType": "User",
    "nonce": "0x7286b15d404cffd1334eb5d183535a6010d09cdf83a197ac3f364e0e5b67421f",
    "signature": "0x4f4b02fdbfdbab5731c9053ceea5404c17fd0c63c39f1995ac2b0400eac7484a74854ef1cd2522f6d9ccdc2b3bffa02802cb9404618af1fc1754cd3715ea3c7f1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}