{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x394c4fd962d85dbda216ba4a0126f7355486983da3208f83cf3d6a64ae36344f",
    "signature": "0x0b493ad2b17d15fbc69cb9cb941f102b94094779cc8ee1da4aacc6733e659a744aca828b9cf237e85cdf89ccb38ac6028d580fc514dc5aa8b9a53accfcd529751c",
    "signer": "0xa4A8a4853051b18e0f0f777693Ce34CF4bCe9385",
    "userId": "634886384"
  }
}