{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x701cf9ae8fd4d19039d07ac371991dfe75e4dc2faa73ce5302eafb795c24dbec",
    "signature": "0xb3c37bb73f84d79cd088ca2965d78e6f4457133c4b226713615e3a3da33fad6002d8919cf2682c43667660af71d2caab8b8ab60e8b73d0a039c3749ddb5d02e31b",
    "signer": "0x500C0B059Befc9f07796c2dca9CAca6Ba1934faf",
    "userId": "963546567"
  }
}