{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16757",
    "entityType": "User",
    "nonce": "0xa634f75bdb178e1a0c6752ceb794144d1eb214a0a48bd11cd44965143e8d07a6",
    "signature": "0xca19c1ce0542040b70333977ff3f6dc5981f7be8815de8f39846b6db56b5a08076a05fda4514286e59a26911cc8c9ef7bfc0c9e1c41d944bb6637161b5f6a2021c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}