{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5462436edd40e2d4cc3412d05852d60df43c0240ef8a94e174b71c69491ce366",
    "signature": "0x02005d6dd414b7807e07632f87f80629dab25713196721274bc8cbe0655e0f2b1154044af70147cff6019415b1d06289be51ca50b1955d0dcd70400c12bc0be31c",
    "signer": "0xA46390478f0819FDe410875506bB31fe575B7aF3",
    "userId": "701110922"
  }
}