{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1471974",
    "entityType": "User",
    "nonce": "0xb3cd2a0f2a50d2e1b52145122ad69b826e257f920e2505c186d3380284320c80",
    "signature": "0x7138017a47adf6b12512479e5a3ccb44625b3402844ec4af3ae5ea0bd543f28233676f5ac13241a06ad82a413664411c8f88d027b7f610597179977ade0325c11c",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}