{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x3a8cc14119e63d720251d71333e1c4fa5ed366c7382ece1f69eea16b1867c438",
    "signature": "0xe9afe34beca59d1c7327c32b243626a1c01c8ac1b0fe3cea4453a9640ccc63a62f55d2c2f497b583f265f97998bb22b958764786c1af99e495dba02781c372411b",
    "signer": "0x1472Fec023A32bFDB4d9d8dD1C920b2DD601638F",
    "userId": "452206810"
  }
}