{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748896412",
    "entityType": "User",
    "nonce": "0xcefcfe7cae53c0da23eafb8def9993a355f931cd8b6cdd919768391452d00ef9",
    "signature": "0xee399bbb7091273655f3a1c4a78e6fd884ca3380b412e332a572d6d3963277c46cace04c316e895bee31ad17eed562b3d6040f4d9901d89bcdd1c99ce51c8deb1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}