{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301606",
    "entityType": "User",
    "nonce": "0xbb2df097d3679fab5945f12ba4bbe7321fe8a1f4df2f3d337006f81f98b86dfa",
    "signature": "0xca8af3389f238522c736af94c4219d4d62cbf804f1fe40507fed6b638ae9b81d085d8f4642ab745d9d00b6d2ed2a1d0dfb973f32bd813eba2164793a3e0b64711c",
    "signer": "0x0446A55de9d9bf71F01f9baCDD9D428bb57164aA",
    "userId": "328601945"
  }
}