{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1497323",
    "entityType": "User",
    "nonce": "0xa070509bed56a15b706cf19bb6b411d487f6df3bacf1f7ca4ac411a73861270a",
    "signature": "0x44967bd5466c53f8fe1a3dad37a91766e441075e3180f014fbf25f85355989150065ddaafd38cff73ee8d65a655801087602c9e087e55a21334758b6be6dc72f1b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}