{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108548",
    "entityType": "User",
    "nonce": "0x29fc87ded9abec1ccc01b9588fe7853060124ba1535f706b6e93414f3287e998",
    "signature": "0x7c8b1a5a1cf9e4b8519d4e5c69892799df11aed1b3506fd6a1ac3ab3300b86b63dfeb286fbfd819b5ccb2c9aefbd8a86599d51981f0075fb5f15a97abae4fbbb1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}