{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "269304",
    "entityType": "User",
    "nonce": "0x254c50429a02d689e41fdace6fe6216dc83e63b7061473376590b2fb4c61e1ad",
    "signature": "0x30b24a7f31acdcb76dbcde5e8ee7a90896bc84964db3c1a1aa0d2c22f99261b2035c3ee52768949816ad0d52eef553368c57f937aed53f58227ec87a5734a1d21b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}