{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2273",
    "entityType": "User",
    "nonce": "0x663e8108e669290bae855ade5b143921db16b9fc41cae9cbd0a899cb47b52d4e",
    "signature": "0x93d57ad6a3555e976f3a2f8c1a7bc7ca945eab94aaff38b45ca4fafa04beb87463ab82cd7832107bcbb339485087a32ea7ffd74974b868629b8631b426430ada1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}