{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xadf697e371750b75f7177e04bbe7e70acd7c934f4d5641a08714279be0c821bf",
    "signature": "0x2c71d5fd4129a97b0a4cade21aa0d87a0890f6cd7cd9a8069120e7233a01d4201e39e4f2a791bd4192b4fc93aa5b29e64a074af561bd9dd005eb6d310a64d1081c",
    "signer": "0xA5A7DC346AB808DF112C171aD08232Ce0906F446",
    "userId": "512549047"
  }
}