{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "374216",
    "entityType": "User",
    "nonce": "0xfff6b58bf9c884e3620cbf15844b6e2c59a3e1e09503576d9717ee6df74a97e5",
    "signature": "0x3def867107a164a6ec2841e378011540e827c142b3b44f980a6416131f70cd1a0b1222b7447f70131fbaf164aa5b72e6890a88d9d588a24a07fe614d8782b1531c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}