{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0x8b9a90d8af7520bcf903182479daababe5d202c95e5e0fe921b7be3b628ebf20",
    "signature": "0x81218d131b37d830e14ba3eda1a4a711c9e0ecc25e09ee85877f50f643d4340c73662063b5c9ac4773ebb8437e51ed7bdc32c1fd1a144034631fa6f9949772351b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}