{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1891790",
    "entityType": "User",
    "nonce": "0x746a78e8049474fd0d16cfb01a93656600adf56156110ea2c6633a395f4112d5",
    "signature": "0x4bc7b144e66486eca6047505bbf0b5ac0e15258c38ce142ae9034b9ca066e5870fb2793f4656c33e946d6aef01fa77d978fa1bd284863d2e2c55aafbf24c75871c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}