{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101520",
    "entityType": "User",
    "nonce": "0x83c9c1497e87723d64a497f7b13c040cbf788028a16eeff283b484a4211b7ab9",
    "signature": "0x9423172ee417bf018ab39bc868a7e9c45b057e78aed1f7070209cfe418ba2d6701358d1edbc7d98d6a5ed155f4179c4b2303249ffc8bfe0a1b9ee68442f272021c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}