{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "775519608",
    "entityType": "User",
    "nonce": "0x28fdc8bc0db358eb19dbc5d3c23e6daad42d05ea5e818dfa1fedb5e8c12d6f25",
    "signature": "0x67d54260a7068a4e25b4fce782e58ce725fc8e62cdc6b5db44a084fc3ae2b53656af8966b85c19300f244be00e79a85ed8386d2bf45c05f339434348e1ffbd4c1b",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}