{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681465788",
    "entityType": "User",
    "nonce": "0xb8f489a6ce092133dba5f44d4a57162a9740f883b3ab3da807d6f17e51d45944",
    "signature": "0x4e36436955ab7186ec598a96642cbff375abc83f72f6b9027ed79fccf33ce1564de28eecd4742805ad48976c40c15718efb3079f881c2eb464fea5631bb7c00e1b",
    "signer": "0xE534A1ad2e8E1f616866185D1efDf463B0eD38b4",
    "userId": "353625"
  }
}