{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584724126",
    "entityType": "User",
    "nonce": "0xd6e8dd711116254ec9dd4f3059a84b36cf2048dd763fa03a3fe118401b7bf710",
    "signature": "0xb710807ff04fb90760c99b7560586edadbc780ce52de65db265f655703262bcd274a4fe7ccea51b071f2e8717f886f85be171b9cdeb0b38deef321224e6356061c",
    "signer": "0xa57b4357994d735DB3Db20349Ac21e880472e94D",
    "userId": "521443517"
  }
}