{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4510",
    "entityType": "User",
    "nonce": "0xfc98d4fe674408f6920df31c84202f1ff22f231c75a7e62492343652f3719790",
    "signature": "0x2ef29961c86cbe94e0779c1091b559e0d9b1303d730210c2c70cddfca2a2fbef1dd0a252f84988aa58c9169957ab04790f2f0435a1d754e345f57f6b6f0efff41b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}