{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "177943",
    "entityType": "User",
    "nonce": "0x3bdc70f112beab28bdef06e8319589bcd5b37f162e30c5978287eadbf8f3efb7",
    "signature": "0x1bad4a9899c8662c46a2dfa4896dbd78a921bcb0e7c3370bfee273cfe29d9b934c05b08475f957063e3a715164f817856779d1ce39eef1537ca8b45ae3e52fa31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}