{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x59d6c4aa191233ead367b2c3302debfedb1b9725efbb3ea67765587706150833",
    "signature": "0x8d5eb172ef2a940f19f602e1d437b3c3adbcdf94eee36e80e59db7f318cfb22334aec82222ad4837473d1b17de991d35e0da51bf531108235bfd8c32960621271b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}