{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871088416",
    "entityType": "User",
    "nonce": "0x714e48713acf12d61a18fc2d022df1cf5dfd1fdb1c892fae409ea0448014278c",
    "signature": "0xe13266e54f300b06a8fd8367663eab600deb1335687e781ef4c022473716c48730fbfb8532f5390cfa65742399f9edaaadb6c64bdb021e0f22c12acb64370ca31b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}