{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfdcefb610a11a1be20e5280ff59e3fff970b6788dc92d8b4a0d372f66ce54601",
    "signature": "0x9d7f9cb2e375fcc1c57e534228346890c0a8fbaea820f701725d1dff3bc5391f70329f85108779aee5d8dd317dfa831e9cf1a9c47ab1950dbffd349bc36529891b",
    "signer": "0x2A9118985Cf006EBdcEabcF713D90958E4Cd738E",
    "userId": "972588517"
  }
}