{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10373",
    "entityType": "User",
    "nonce": "0x4996048931c4f3602e9b39b737d87cfcb29cf6a79f712eb3def1499daa4a7496",
    "signature": "0xd4595151d2783a30a61baa06e0ce72204404ae5141be6bebb800ca8a04a72b246d5e043465a985363209655e5ded449f8d6fda199deb0012f9b05facaa19aaeb1b",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}