{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1882637",
    "entityType": "User",
    "nonce": "0x03505397bdb65fb224c65c593a5baa4e5c300f0091e446dac0a2789011dbac80",
    "signature": "0xc3b79c8b04a78b6d97743d3347a9ce6203254e137c121b287c6431c023a6b12230ca4ec26fbf6203be10d37a7f517fa400643ee22b0b4181accc961f4e76635a1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}