{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "900325196",
    "entityType": "User",
    "nonce": "0x96e8b806c874e0e882d8f540510fd353e5f89112bcec368422df55ab5fddc7be",
    "signature": "0xb90090b9fd158716c5a134b28c87f729f410bc2d7bb53a158507c0bbc7a3925114e3302e1e54b9d5cf6c3c27604826eb49f5f0e9edc05707655ad23885ec0f701c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}