{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377610060",
    "entityType": "User",
    "nonce": "0x8c5f6b577576a0cc4909b6456e4c816873570b742a072470654b7cfba31e5deb",
    "signature": "0x2be7daef9792c9ce5cc5e8c17ebc0b2112c3ddd82b3398a8e1b9000e8df6f21b7b173009402466180f6480c3f16a8e8be1879901b91add81c898d7de0bbee5081c",
    "signer": "0x569AD4a425B92a964d8e182094f4aC58C0673162",
    "userId": "577745560"
  }
}