{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7bb26a2f972ca5385e4bc2151ec35d0000b6ea5c30a603d5dfa0da273c4d1a22",
    "signature": "0xf4a6ea4effe82e2824688197f2f6019151377cd1f83f5d7a953ebeb2f50752b66128c4debc11828e22e80e48ae73bad48b0403cd7940079c84741bab582dad1a1b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}