{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "764650114",
    "entityType": "User",
    "nonce": "0x1859a7bf21d577fbd91ec01f5e4c4598754426c24e24e88f609cdbf49a87fc78",
    "signature": "0xf8b3e8335f01b8fb1cadcb961046f209cb6e7b5469f3b737f528a99352c804c01f6a30f5f32fb8767bd1ad3259ee92811351b4c51dc47f952b4671f931b7d0b31b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}