{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x888949f429d2b05cbc84d88e4ed94d863a83a635691a7253f33c7c77fcbed783",
    "signature": "0xc02038fe1fba6eff6e2f05c7f9b92334b6b11019835a7d978b58a6f6d2a26a4911270283296b40db934948e6e861bfd9842c7cda9574e2324f1bf65a0ba7f7261b",
    "signer": "0x9c0E158fd6a79ba8384938c72F34b5D765d2A9Df",
    "userId": "178678516"
  }
}