{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0x13a8b561014bc561ff96648d92735b5285ea6c234cb66102c50a8d6a028a8dd6",
    "signature": "0xacbae1718477b34e638c9a569d18de36ce97897cb5255eb75f43afa6b6561ede49b69dcc5f94863a44e51fc922f4537e8cdf3732c971b8319aedeab25b7e460d1b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}