{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "734009",
    "entityType": "User",
    "nonce": "0x0e8652c07205610cfd44281de63ad48e6b4f653ff41b1a012c760d6019f8feb1",
    "signature": "0xf782602894a06b554996bec2008b66c3023f463fa63d7b9c10ab2d3fe7df980208270a6e124a8c34b54a16aeb73b2346898fa6b8671532498eaea302b7235cda1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}