{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "187987",
    "entityType": "User",
    "nonce": "0xf5825fe4be4943ada8b76a86007e6e491c4a706853f930da8d71a43edc304064",
    "signature": "0xf4b01dd3221422d41401da77071ee0b533d556f2a79017a2f94195d89351539f4535ba2fad3210c10a811f49a9b4380a53bbfbd4a9950a94ad8af32ce01392811b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}