{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "419063798",
    "entityType": "User",
    "nonce": "0x74194733a170a905c18d1689f9b7f112e98a22eae7ae6254ff96a91917dbfd60",
    "signature": "0xa675dce75060264a9e5ff6f3ba076c3f129c11bbd55922013a497985ee73980b2866864cb7ebf10c1c5351f1670f0b6e8702fae071c5c2e62bae2aec8b04f9001b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}