{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x2b40340642fbd9cc8e97f68382e2ec9c141700316befe2bf5dfb8d2f892cd77f",
    "signature": "0x14a84f73fa9a9725b8e6cd409e5f6b4793282c65a53cee6c87d5caac35835bf31a1ee5800cdbfb023ea98333c2e901e65d8aab1d1e4dd06c41d141055b6893c31b",
    "signer": "0x94ED5751F64981fDd35c3f6F061067c03B95D72F",
    "userId": "63175258"
  }
}