{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943474958",
    "entityType": "User",
    "nonce": "0xb34708e9d75143f9a4c51731d653ff8d6d8830b2ec4a45f59bf295afe080bbc8",
    "signature": "0xc8d39f5eeb391e992e07070cc999c5db5345522b3d6f201bdae372100b301cf70aa18805b1dd3b5bbbcbdb124b0c5f8b4b5678da7c957991d157ce35cc31a1e81b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}