{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1882811",
    "entityType": "User",
    "nonce": "0x743b39132161b059d64c1fd8800d4c9a6ad57d3f802f1a2081d1e59b62727eed",
    "signature": "0xe5da319f3d4283525871b8f8a4ddb60c227c0d5991129bcbdb6195aeefb5dd07631b34bdd90132e63f79490fe1bea82f8d2533778dac8d1ee43f25ec7aa6a1421b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}