{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1780850",
    "entityType": "User",
    "nonce": "0xa68377fda5d6db8128c6faa38d2d69c3548678a6aefbae32f7dec36541f21be1",
    "signature": "0xac7c977e17b4177923bd740319c60130046d35ebb00914867a46d5219ebcc5da2acf4171d7ca812a6fb085f56007b3d2974dde5014c1d320959d5d672b1e2f671b",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}