{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154589",
    "entityType": "User",
    "nonce": "0x771f56f15b2a2eca217fa2a5540103f33d9af3e5fee0c427295cdd8b5320537d",
    "signature": "0x2d9fbda8e0694582e721bd767345d28986f628b52aec653b446caebf92f1769e30be92a02e0bbe4624196af1725c50c1e56ba92e41e0daecd0fbe410b7ddd8421c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}