{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313412",
    "entityType": "User",
    "nonce": "0xd10457f6661e328e0b61bd6e2933d390e2b1a84d1143ab061bd047adbbcbb870",
    "signature": "0xddce260e9985becfe6c27ada36dbca9ce02585fc2dab5444e2704a4fac48f4112cdc9739e298d8a6e7f442d9d97dd414ee7c27136bdd3903551484fce1dfa4d81c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}