{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5738f29d91ff94b6eb42d1fa291ac52b672e28cef9f4d6e1a4bfcb1a311158d2",
    "signature": "0x7a41f432498c55383fbdbcc3a22f5f86d28e073257e691d50b5c635d6fd75c805401bc4d0796650c9893e7b327b1447d87acc9db6702ad9e7ace77de02e570841c",
    "signer": "0xC1cf18E7962F1B2641601386734817c6F66Ad50F",
    "userId": "44823526"
  }
}