{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd2e63dc49467049643afd13a0f9ec4cdfcf144563db1512fb68ebe20d0c5d341",
    "signature": "0x31a0c0c9d2bd21db4c3492281262b0ebf9d66e78a79e2835531517459fd0e68c0c4c8d2dea830717050d5746d3bff152e4858fc08bd889fafb5715f3ad2f4b841b",
    "signer": "0x7C19A4A07570d38ce537aCDB6B7e6401E9D345fF",
    "userId": "322454700"
  }
}