{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa5ba2fa66a50e9727de27357db5ebe8edec25168cc35451837a87671bab49da4",
    "signature": "0x0e2f7486a38b27b23bb1533c95c433fcf62b5249baabccafaddad43ca80887756d3494819394f2cf2607b2c8fdc0b065daede51762def6d209d0d76b8401f6e41c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}