{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0x01c09cf2115da5464394f5567c12db69f02992238b6d6c968ae96f28104f6a07",
    "signature": "0xc080dd0a20914ec5ec0e12c17d3ae5b270e570f17c42d6709fda89aeaf778d5964dce3c019c5fbcc0d59a4c2054da5a9b3d09a379171ce34891a74b33a40514e1c",
    "signer": "0xd288EFaBDf61D592C8137BB444Eb7d8eB3e12170",
    "userId": "445501760"
  }
}