{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x00f8261d28c6af2c1aac579617f71083a68c6833847d568ac3a9a0d78204ec29",
    "signature": "0x8d7e303591630e8581457d95b8e5d49778981952624af1fefba6fe387041cf8861f1f36f3c8b89d46433ad1bf6cf70993dc4706925cb86ccb326f9aaf25636a91c",
    "signer": "0xEA7A9c0C2534c115A90EBBa741D9d51530BDD7c2",
    "userId": "80680623"
  }
}