{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325172820",
    "entityType": "User",
    "nonce": "0x337930dc53f38e47ff44195232c832d9868ecc930dc30c109c5b143398b913c7",
    "signature": "0x244e829f81be3d5db79877b422acf786bce98d395dca98d8c7bac6127f06300a3ac4bafc952c3bdc6f2b93155a2fdcd9560d6ac107a33611a6924a626de5448e1b",
    "signer": "0x28b9f9197fB6fe7356F4228d71DCDD1C6aA3C8c3",
    "userId": "252398720"
  }
}