{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "759489",
    "entityType": "User",
    "nonce": "0x0747748f3b7e25d7a3305b5e1c43bb1ca3015a26966b1074bcd59c0f66aa009a",
    "signature": "0xc9768d82a405ca1dd6761839bb0a69af8811c3ed4e411221c3012d672efd9f33273a9a333321a314374ee96b475b83c5142bd19e032584d1279fa7458645f07d1b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}