{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0xcb0ba0ab2f539ad99cbbc195c3bb9b04abbc4d75cd5caa5004e16a87f40c710d",
    "signature": "0x4ee5b84f4d1629932e5c6d7badd20d65b9178ed19c5c3b86c83d36db5861cf8613a67b9c3018e7606a1635b82a11ef08a9d13307f1c17453e01365db6e0c5d951c",
    "signer": "0x2B28feb1CA15953a5a910C4E741698a24e8b3FE9",
    "userId": "887020893"
  }
}