{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x48d5bc6dcd3b966e0739204db7ef1b9a1ea0c4ada3a1fed3ad0e2d0133c1de14",
    "signature": "0x79a74b55e4c21c162f0f5056bec0600c5792d564d9ea464bd2d5ec1edbb80f52798ced0b04de6e12ae952bf41e3b6bd6c194d3b7665636e38e5b52d778bbbe201b",
    "signer": "0xe03935A6a1B48d6F96fFb96E16DEd0c73888AB76",
    "userId": "290317362"
  }
}