{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28123",
    "entityType": "User",
    "nonce": "0xca54daae054abef5a18e57baf7bc0ba2fb16cbf7bf3df4428bf35a3f5a057f84",
    "signature": "0x3fc8e31fd79cbb3703ecd2e1f6eaabbc8f03c22ca9354f19b0084923dfad7516148533df606f96fb8e37f9607829a732de9d6c5fb90a554af6f273ae062d3d6e1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}