{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x5f1fd89f4917ea4a4589427a636dbb29987908026fb4b16ba524d1d726bcc7e5",
    "signature": "0x3b10c30cedc5a302026fbfdd8ac46b34c79e2e332c4223194dbd5b9605721c6f01fa7eeaec82711f7949faf2e40239693e7fd71dfc657e5654c66c40ee4ed3e71b",
    "signer": "0x2F55f68a6D874d95E4F8c2A7376Dacff6c7b8518",
    "userId": "546609624"
  }
}