{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "452108975",
    "entityType": "User",
    "nonce": "0xd0bee930fcd237b70717e34413abe0e5704ce98c25321d1f9ddf85e13f0d6576",
    "signature": "0x2777fb90b14e03b9cb7d76d203a3f9bae5b47404709b697788ae4db7a724eaef4b74b7dcc35076fe5b9e118113464c67a808cc51782ccfd8a1b0e140f5d8b35e1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}