{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307338",
    "entityType": "User",
    "nonce": "0xd43a12f1b3c54fdc9896412fdd750a1fb953c6dbf72f21722d57c0370c7e822b",
    "signature": "0xf7b5513ca9e490fb2ade8d88d4b84658c90116e8944604a8248bdb093a1c16f32c36913d29dbbb8bd507811f8654e3fe73b197e072470f2bdfc835ca30eff2341b",
    "signer": "0xdA708531501D4f46C162eDBca1D759CB6e7447c4",
    "userId": "985405611"
  }
}