{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "735463452",
    "entityType": "User",
    "nonce": "0x7b5e1e02213cbdfb023ce5ad2f46615551d1d7b439a9c77275e590708096e99c",
    "signature": "0x6937e21a2816edac98ce07c95596bc1be5b24eef4b04c35d4fcddd1bf4d34f6878d4695d1582fc38218e12dac39ab23c8bddabd7543650f59c3a3c64f8294e0c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}