{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0xfa732c5b2e17901212ff2e1e25b52dbc1a3ccbfc549d539d6383eb529b25d60b",
    "signature": "0x706777000f21cf7702904957e250eff3a3f520f1ea3af55cc14cc978ad65ec0c6fe37dcf17289fba6d46157d73d32f2f4e26ab9f83f5f14b1ba06a1a9e3bc9551c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}