{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870318408",
    "entityType": "User",
    "nonce": "0xaf198f954e2b0b2cf82c9527cbdb987c7f3d6136a58673f03549b17a4eedadc8",
    "signature": "0x7a51fe94eeb7fe6a1b870d39b3c313683a97ebdcba239c2e941eff6ee682796664d6e3e3524fd115e0621c6903d73bfc33560fce8cd183abb67cebd5bd5953ef1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}