{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "890815667",
    "entityType": "User",
    "nonce": "0x409186ea8c129e0e1aba2504b4996e838177006517ab05b6230834ba13d8e78a",
    "signature": "0x8b3a76c4d680ac3f4b14ee9c48f7de824092f9b52e380ac660cc3b870ecd75132925dd0c2f492674aa5753556304cf5ff1c3784a6f43324e237b8d4069c4c2c81c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}