{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54119",
    "entityType": "User",
    "nonce": "0x9af328fd845c0dec808bff141c1dea055abf53242d5252501b8d3f60d0198e3b",
    "signature": "0x3824588bddb691e00b3a0f2181338e1f649f1666ca2de75acbc56ed810a15c940f8688568c0ec3efe718be8470601debec70d1da1319955eb256d4284c80eb911b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}