{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x25e35f3575cb10fd1ef95b444a7f71cd1a91b70dfd907663f337039a64d57ed8",
    "signature": "0x8407bc0614f32f0f309462256a3b10f896d67f0758c2df1320f44ad56015fd9f12c604de58252f22e3db1853111a7fdb4aa36eb918eff7e5c3f1a399c77267841b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}