{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951546743",
    "entityType": "User",
    "nonce": "0x3d4a392ad3ae0cb1bd6718f926a26af963d4fad0f94cc4da63571d63ac3822db",
    "signature": "0x42945bf9ac057fd54c99ba5d2484895e33bf008039348f7f90df24c80c4a242a2e0624b909ec282974959ad7d853e438330e8641baedf3aaf2c0417757f0341d1c",
    "signer": "0x1D0c500EC847246923045cB0a285242A93723f30",
    "userId": "302385956"
  }
}