{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x75bd6077290385ed7f711725076a1e458dfcb282069aec591187b182f3099a03",
    "signature": "0x343c11f039369dfe01e09277d5e0790453355737a8964e7b34fa7dd630e11f1c62bbda7977ef545533a4d6e08731c61288d13ff1b7f4486f719137b11f7eb1571c",
    "signer": "0x58eE21bfFe569da412DF67281f3fD403a5f2F8F6",
    "userId": "764092920"
  }
}