{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55375",
    "entityType": "User",
    "nonce": "0xf672df6de11d6676ee6cf97b93e0548e90020b5a2c04b95fb56d663b4f33ee87",
    "signature": "0x4cc99c8f1759c745f456668dcc8cf83a6956e3c0f291f5c5eef7aabdb391dcb82bcf64cef334a3b76699351796dab27f6bea4b6fc7187a4897dfad076537d5291b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}