{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0xb5852d6109a6b998ce8ecab204ef6dab358f31fe6e7d22d5996085a6651369d2",
    "signature": "0xbd32505d19d354ef17cb8bc8d32020d3b6cbb10984a24980093e8d0fa45c949504cf2221f41cc01056d8f94e81e981f02a33411ec0ca6c5c629a59275a86efe61b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}