{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299279",
    "entityType": "User",
    "nonce": "0xb3c9e16eee9cc25bbc497219ccf0890ba84db901c34c0134555ace86f9675374",
    "signature": "0xb14a36418d0f822d5279f063d9a23d50501d698665308ef5602ba205a5d76ae77e041b144f5eabd32c482b9f9326fd2588583d0a0a3d0c153e34cc996e0c5ff81b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}