{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe844a0daeb5ad3ec4c461195446f86e8c0ebfb9f71737e968363c4d72869facd",
    "signature": "0x62cd2600f5f15f9818195e2b9d10620cee959c06121154089d3ce8d3a637706357e83cc3b17f5a140fe6197350282c6049325db94ac93d72ec2a9eb1298e7c971c",
    "signer": "0xd2f562fC56293bf5b1a915D0DCB11b951eC96807",
    "userId": "818495028"
  }
}