{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381571423",
    "entityType": "User",
    "nonce": "0xb26ee5ca6897fc49a20c097d3ce4ca9dea6776fb56455e9849fb135f8fbb8f01",
    "signature": "0x8536e48bcdc50510ebf04b383387af5d3bab3c19ecf0454c86d79f64613213823666624b89335885489b017edd63db89b6dbdd39968911b6aaa1a31c3ef3f7dc1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}