{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319060",
    "entityType": "User",
    "nonce": "0x16d9853b700fcb457947df4058e96177c9e48611d7843bd7af7968cfd480ef0c",
    "signature": "0x0a44ffbc7157c194a5c9cb52137e521afcf7714579b4a3e6a51b5f22f1096e5e4f45f8e16bbb0dacaae3b1b1f274bcd50f7ab001d00ed3391643ff987273fc3d1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}