{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "981716494",
    "entityType": "User",
    "nonce": "0x185ddfcef892f15abd76ebc388a9645b274bd8b96c48f2b0a6debdf1a9103f6c",
    "signature": "0xc8e0ddda767b2093f684f88227bd76d2c6af0967abb2066745fbf19cc9ba715b6730fd15ee741e2c304459e3e2349c4bdd5a6afbb962e5ec1d72288a37aa6b991b",
    "signer": "0xE18f37f193553F7bFB76f10C386b65159Ae304E0",
    "userId": "4510"
  }
}