{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75322",
    "entityType": "User",
    "nonce": "0x6f87723572a2296957674cf58d4d86b596866d5e29f0abd8e9b62dccd942f4d5",
    "signature": "0xf9c5989c98113567c9ae0bb3faaccc613d0f62ce0aa9cdb117fbdbe0b91ac8691e04d9490ce998089c82422b695cfdb66005f9a5b7256b47baa40f8c66f3917e1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}