{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x0c397c8441c55401e711badf6d63201d8030a1686b97cb6406ae04795ad1b2e7",
    "signature": "0x7ef9ed5004425c23de1b7b178c1c16ab64a2c7b4365c15e60ecce5d5be83e4646a4bdf1d223df4098f3f81f33aa94bacc16dbf756a6d559a6b67f97fa6140a431b",
    "signer": "0x227c6D4cdFc19155a5212Bc082E6079835436E1e",
    "userId": "94961"
  }
}