{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaea446333dd5ed6346dca29133626626c1a1243c6b88e05ffdaf1d4d10b81cc2",
    "signature": "0x350cf24dc509bf784ee1d2daec5a5dc9a59f0421fcd4632f6cb76bf0af3ceef51f18f37d7e159a42149ecf440d4f01d82c73f4503ceb2a1fd80ab49239b8a1661c",
    "signer": "0x4498BB57546B6a69b5503DB68f683593292BEec3",
    "userId": "659973395"
  }
}