{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508263176",
    "entityType": "User",
    "nonce": "0xa220b33dcaa511cec84dfed2f08cc229fe7070915e2aa1b9df674945890c64e9",
    "signature": "0xe8f7ba6ab2fc9fbf901a8f54e5ba3b46b87008cedbeaf470d45af4063cd3fecb14ecceb7a6008a7b3c31f1d0ce2d3ccc19945ee1c9b791ac4018101c03ad917a1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}