{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb77e1b09db281e31a7502ef7626200f2ebfef0c00ce57ac0b9815c719975a8b5",
    "signature": "0xb642f567ca84435778a2816ef39b9f3a907db404e73569d35ded444f95b04606411cbce83e7d2abefcf3cb420d19ca47cd6399ec618c9d42735597b92e0faa3d1b",
    "signer": "0x3af7aa9c1C6b35d5E91908ef2A277cd7a3d862f7",
    "userId": "741009203"
  }
}