{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "406225571",
    "entityType": "User",
    "nonce": "0xcec7c0200492ee2803aa25b9288046eccdd0b56d7099494e67a424e2d2d0b983",
    "signature": "0x8296e285678a3fad2f56c5f24e3c5ed62869c47b1b0bf5f2da54b5590e84c3e11bb88d680e440a11f572eb821b7dc58ff1ad3804371e4f886df1947c2ee6e6511c",
    "signer": "0x63F3746711A3a89af8D7BD7D6bD8cD5f59c22673",
    "userId": "511280302"
  }
}