{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "196632465",
    "entityType": "User",
    "nonce": "0x4788c933cbb7b23b5900ff67b54a525166307d50de1736f07606651f11c62a6e",
    "signature": "0xdf2bb94f88613c2421af415ead4e89784e47604baa1bd122ccd1498222555ddb49351ba5a532426eab1aecf641d1aa6a614f904cdc42c51256541ac17d764d631c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}