{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x28983b49b992d2fec235ecdec3395c3b675c530887aba824e353da9d2af2037a",
    "signature": "0x76aac0fae9b89aeaab6e2f5363b5020b01642e292facc007c3756863f333888a60a4630be360dd570d8d500caac596a9b1d7a643923db345b4d2f051891c9ce91b",
    "signer": "0x6C3004be0a15E38c4C10861a373c4dF67C0bBc2f",
    "userId": "339021739"
  }
}