{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x5a2d28a091db50c2a5c5737bb11b910208730cc7ab8dc6d996358c73583b1843",
    "signature": "0xed69e963c87c08ba3fc9a76184d95e399667250cc2f43d9bf61d071685cd905f05bb3320bb60b6055a64a0583474a5ba9fa9733203b49b1fb4f1d4293db4c9801c",
    "signer": "0xb7f45f35738C96f88c833E01E9e28366713013cE",
    "userId": "775647398"
  }
}