{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "702435",
    "entityType": "User",
    "nonce": "0xf919ebbe056d8ef1657730f29c1d403eb2f1bdca4922e4c63f7c56c7915a1b80",
    "signature": "0xd5de9b0b767906ee27229dd8c1a81b9063e1f3ec89eba5e4d6bbe7287873a4b475336b2182d9afd5cfe27ea9337d8698c81dc4aecc264757dce4e7a6a3593e421b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}