{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138775",
    "entityType": "User",
    "nonce": "0x8ffa713107afd13364132b9e9a5398c56060200459522243203c59259eccd8a5",
    "signature": "0x94b6f958c0f1a18ea23fdcccb770a6142abf8be52dddc3c21c1c02b24d6d6f884624e6f63a3703fb30ca0133b08a56e08e0ac7d13ef8636bcf84c1b111f66fd01c",
    "signer": "0xAaC77705f5f6bd787D8581c36Ddaf7c0c7AE3370",
    "userId": "827420993"
  }
}