{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17190",
    "entityType": "User",
    "nonce": "0xd90b4271faf762febe6bb3d1930951c2b385353ddd716b8fef873f09b2353529",
    "signature": "0xa7dd2f6c39bcb6763fc1cb7aa817d17dbdbe05d8b96a698e9eee576a429c78756aef948b961e0dc0ac439fc60ecc9d462722ccd42c359c05d9ee91ae295f4caf1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}