{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1873428",
    "entityType": "User",
    "nonce": "0x9b565a4943b10dc6cbf7bb355b550a14bd5be95f98b1bbb44af0ab983c68bbe2",
    "signature": "0xefb935d8d190107ec9fdb5ebbf05a980e08ac0cd35e9d33ec8163cb821dfa20367497b277ac59cc6aba66da6fb123e81054af8f5475d25f15836e24969598c701c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}