{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "630811619",
    "entityType": "User",
    "nonce": "0xfcb7c641200091fb29aebedf28e2610c9239af21ab2fa786a9623a39bfd4a323",
    "signature": "0x091e36d819f40b27e7b179beb70a235e92265b7c8beaa734d3a8e7d839efa3931b89008d0bc89276e85bcafc5e9bb9381e206c0cf68b01c7f22c8e9be879efd41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}