{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737872723",
    "entityType": "User",
    "nonce": "0x8b48285af592d5c243fa4bd0c19305b064148e856c8af6f7d7dc162ce9e98f78",
    "signature": "0x82a4eae52f498d3e03db9e8b874010d67cf487ec55c22240ef3a02d0326ab48a5a371b43f43f05566a79cf74e57c8026ede1e3b050e3819be0cf313c816e30d51b",
    "signer": "0xC8AF9b676E09a1e7B8bCC1b53851112dC0F0B5f1",
    "userId": "364447"
  }
}