{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943606732",
    "entityType": "User",
    "nonce": "0x64b18e83ac3c2f2f50a1e3944f5f8379c0b34f269c8afe8780dceb5c0a00a51b",
    "signature": "0x91010bb5b81d1127a0d535462e756732583673249e6d041ffeede2847169ca8856c1b3385f32d1a355fa297c3f2197333ec92c95b222658eb2feae97fcc406a71b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}