{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "615067451",
    "entityType": "User",
    "nonce": "0xd803caebab6b28de77721555d965d85906e1879999c651a3d34801984e4c1a02",
    "signature": "0x6993c550faf32e90f9bda92430b2815185b056bd807d37983ba783012ead357f6b7900412efc8bd6475a81b0261274aa9749af7f031d66d5344551399e17bc381b",
    "signer": "0x1Ef5331d98352E3A7eb4f177ae6BbD27cA99eD1B",
    "userId": "771602835"
  }
}