{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81840",
    "entityType": "User",
    "nonce": "0x239b1b5a24dc1d8a062188176a8e43e217487a8b71fb57cffcf7fdbf1ab43c2e",
    "signature": "0xf3148b1bfd9d871c6fb532abe0dec5d8ea0b6f1be23cf068137d85f3ec638db70b0c8706b544969544e9e087252af1edf0c8f99638081affb9c3d7b8f16bf2641c",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}