{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "129439",
    "entityType": "User",
    "nonce": "0x6467fdd1526ca5b5cacbdae55f04d36f1c339754bda4a0d4a6a2a5ceeeb13fee",
    "signature": "0xeebd6719e06889e247c67ca9eeb60522ab3b3bef0ca7fe7432bc4e336c08da0e5aa7c913d1970c5cd9d811219f4b2c680a13f0083d6759457437abf89be19e731b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}