{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "948329777",
    "entityType": "User",
    "nonce": "0x3b2674e70e2a54764565397c7256d4adbe255d8d2b0372f50ccc2babe4219818",
    "signature": "0xb48ab70504b3e089f4f9f4c4aab29c8336ad2e3892528c405df3df6f0700aa3d609b591f7961ac4665db1bd5c951426b351d47624461754ebee06cb4c1150f411b",
    "signer": "0x5156122E7f53a879786546b3133306b9F7814b9b",
    "userId": "781663071"
  }
}