{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319612",
    "entityType": "User",
    "nonce": "0x974b2a2f4c0dd0cd42af35cf05a13ffe73e9b177cfc0bef9395245e2b65f2f7e",
    "signature": "0x00c6f15b59ae4c49431a6746cf401c308c0db323198cf65d8181cbfc08066e3b078d63416a180e1509ec6d70e1a4b512e0a09fd8b48f29b976eaccd603643e8a1b",
    "signer": "0xe28A05dF906d6A86C4Dd804b23747E87A9a10BA3",
    "userId": "403179"
  }
}