{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137370",
    "entityType": "User",
    "nonce": "0x0707f43e05c0f196ec5d90f0f9f4c057989adecb8ab274fea15d3a5410fea166",
    "signature": "0x831b464b4273326480469aae328e8d9a2840f90d08a710811359d5e71688a157014af5651a517b53ebd974076608e5c9c7e7b88974c98007fcf40df396effd781b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}