{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101876",
    "entityType": "User",
    "nonce": "0x78ce28b51b2e8a7b2306fdc12a48c9281e4eaf2dbd824b641221088be8095a38",
    "signature": "0x7a5b8cb83778859f278a12728c5fc32b8d8a79c0c7c20a043a62731b5c6e17566a345e3f5dda6972553d002361337d334d8ea8c20f9eec0324c1860e91d380491b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}