{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x84464a7c9e262ea011aabb4849f28b04a507b56549c428370b39061c012d790d",
    "signature": "0x2e924962552896a441510688619331d9aee105ac674039cbfa9d1945487e5a7731260e2d6cc6a2a5826ddcba5233cfdc4e50e86275a67e50b69e4b6c5100615b1b",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}