{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50278306",
    "entityType": "User",
    "nonce": "0x4b8258a20db350d8ec31304268dce82004d3fb5fb1277e1d4331a2ceaf866197",
    "signature": "0x84ada63dd91200c2a4eb91e4193bff4cab37455af3ed63d7d00aa01a6e3e90dc25e14f60d204e69edf0ee1ea1593f2e3fc4bbbc4fc3751d5fe8c2a53413dfd8b1b",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}