{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "967908042",
    "entityType": "User",
    "nonce": "0x51c69f96c1c1491185471bb2e3b9e9ee7d06437bf45abb1b4725e5aadb6267f9",
    "signature": "0xe19afe80c673c83d7780dc799486b5e03ebe3540dbfdeaf0a5a8343ffb1ce35008c387a9e12aad93ca555d3ab9758fcc46d28e8444c8f02ff5b05a5b824c30411b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}