{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1969000",
    "entityType": "User",
    "nonce": "0x6f634a57f8944d3784ae1db3ec633c8810e61f1e44e9729085f47ba9f3bebb72",
    "signature": "0xa5dc867df5dc87933c5e9d252d1011001066cbd64207f4aa72b6f2b58cead8f8741aa18a5f9dcf1f7e6e920515446641ea656cda820c0ff6454d891b729a7a4f1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}