{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "994013869",
    "entityType": "User",
    "nonce": "0x1bde8f8306c3cc5b54c2c73631ddcfd1f96fe8cdf2bec096662022a23f0f3cd6",
    "signature": "0x72283ea05da4ec93e8b8de5eb98c49a5092cd2bcbb752c9598f3081ea5323a3849290eca753e31e70c24e4c9f1d46e563e133cbd523aef6e53e939afc36039301c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}