{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x90af8a0c242374f1c6102368f4c455aa808dfe49998bbe6c9056194f156b7448",
    "signature": "0x0dfa85a527ac22713d0350d76ba577a3b41773fad96a201abbf175795dd261ac5c46d5c61981c3f44aec1851a73ebd26272d593815713b55c29496489454b2c41b",
    "signer": "0x9C3949285a8c365DB3090B2635C2e746c704AAaa",
    "userId": "115071875"
  }
}