{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1471974",
    "entityType": "User",
    "nonce": "0x3c152db9f30f7a05f8377248e31cd56ccd782f9e3aee4e6049d24bdbefff4464",
    "signature": "0x34904674f6ffe70f8c3038b1bf6650aa4bc602679d8e950c22297092ddda0d6c5a053742ebcb2a6494f507bce93c77c7a9f82a0c596195883b50e314834601581c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}