{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880649",
    "entityType": "User",
    "nonce": "0x2ce05350d2e2aa93b80a2f5cfea16a5c414e8d6daa6a125a50e891994c972b36",
    "signature": "0x6c4a74fe33644c016e1f6723aef6c519122cca2414ed3c8f9af214156449dc9041469f9da5c34ea2413585cb54e36a4d86318ac67acff8907543f64879db9cdf1c",
    "signer": "0xF9B644bb5d7485898881C9e02e17ba2A635ed179",
    "userId": "866715888"
  }
}