{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc4179a3e8f6ecc5be6210a67c6c482bd5fc5cf8800f60e976b69f1837be0c52f",
    "signature": "0xb279c694eed6266bb0f0c074048314aaee093301f4d442f1d1f0415b2e617fcb7ee9262a26932d2df3a9fa92034cfd0655b07a1e91b9c2e079e1a0691197d75f1b",
    "signer": "0xbE4c4c69bc87C149f670625F67a220aFD51B9B7f",
    "userId": "723334741"
  }
}