{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "758745",
    "entityType": "User",
    "nonce": "0xb754330ae8af14cd80120087f540cdc010791c312bb710ee27d167d116a4287a",
    "signature": "0x80cc631c9ec8633905be06fe22be55098d0c09efe9a580980dd9d0d20d8ecb5456dd1a6881df1ef132d418ceed254c60376c7161d58dbc34ff632555c08646531c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}