{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875797218",
    "entityType": "User",
    "nonce": "0x19d15482620e4af80443c49071f1172c5c5984b0b936e4f4dcd03076e3621afe",
    "signature": "0xe84341a0ea3cb671481029be65c7d3fa4a44e6621134b3868dee2f0bc9d4e27a012edbb30ff18cbdc9b2ea9ddafb8e1eb4dc382a1209be3075ec126de81bfea01c",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}