{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0xdd1969f6fe3b4f5a57e8f0318b8092c4fdd1c62f5ce2d99d67f7ddab3f033ab8",
    "signature": "0xb3e667b23015e6b36612d6141cd4755f322c40cf70a226a427ec0e5d45de751e702f232678c6f9a7de6dfd13850dfbc3efb32ec1b324ded6fdd3badf1fcae4541b",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}