{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330481",
    "entityType": "User",
    "nonce": "0x5a7791161a02bac2a883b5f68d69f6eb2442f72c94af53a7b04ecb1fae820f40",
    "signature": "0x79307abbcc4931e951be3b3ae2b4f88dd3d40ccfe030164c57136f6f95943c7c4c7b56306b3a385a578eded7dea403c738022fab778ece070a7314da4ffb277b1b",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}